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NOC 2021 Version 1.0


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33101 – Medical laboratory assistants and related technical occupations

Medical laboratory assistants and workers in related technical occupations perform pre-analysis and pre-testing tasks such as collecting blood and other samples, processing specimens, and preparing special chemicals called reagents for use in testing. They conduct routine medical laboratory tests and set up, clean and maintain medical laboratory equipment. They are employed in medical laboratories in hospitals, clinics, research facilities, post-secondary educational institutions and government research laboratories.


Example titles

  • Medical laboratory aide
  • Medical laboratory assistant
  • Medical laboratory technician
  • Phlebotomist
  • Phlebotomy aide
  • Blood bank technician
  • Renal technician

Main duties

This group performs some or all of the following duties:
  • Collect, label, sort and prepare blood, tissue and other samples from patients
  • Log and validate patient samples and prepare them for testing
  • Set up medical laboratory equipment
  • Prepare chemical reagents to be combined with biological samples for testing
  • Conduct routine laboratory tests and sample analyses
  • Perform quality assurance of testing techniques and record results
  • Clean and maintain medical laboratory and medical laboratory equipment.

Employment requirements

  • Medical laboratory assistants and related technical workers require completion of a college certificate program in medical laboratory science.
  • Certification by the Canadian Society for Medical Laboratory Science is usually required by employers.

Additional information

  • Medical laboratory technicians may progress to supervisory or technologist positions with a combination of additional education, training and experience.
  • Some employers may require medical laboratory technicians to have a diploma.


  • Medical laboratory technologists (32120)
  • Chemical technologists and technicians (22100)
  • Biological technologists and technicians (22110)

Breakdown summary

Broad occupational category
3 – Health occupations
3 – Occupations usually require a college diploma or apprenticeship training of less than two years; or more than six months of on-the-job training
Major group
33 – Assisting occupations in support of health services
Sub-major group
331 – Assisting occupations in support of health services
Minor group
3310 – Assisting occupations in support of health services
NOC 2021 Version 1.0
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